Freezers and operating methods using adaptive defrost

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United States of America Patent

PATENT NO 11493260
SERIAL NO

16427759

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Abstract

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A freezer and method of operating a freezer are provided with an adaptive defrost cycle. The freezer includes a controller that operates the freezer to: provide cooling to a cabinet via an evaporator during periodic operational cycles, monitor a time elapsed since a most recent defrost cycle, determine whether the time elapsed is greater than a current defrost interval, and perform a defrost cycle if so. The controller varies the current defrost interval between a first, larger time value and a second, smaller time value based on a plurality of trigger signals in response to various operating characteristics of the freezer monitored by sensors. After each defrost cycle is completed, the current defrost interval is reset to the first, larger time value.

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Patent Owner(s)

Patent OwnerAddress
THERMO FISHER SCIENTIFIC (ASHEVILLE) LLC401 MILL CREEK ROAD MARIETTA OH 45750

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carden, Michael Scot Marshall, US 5 130
Muddasani, Raghu Ram Asheville, US 1 0
Swift, Todd Weaverville, US 11 61
Winik, Martin Peter Weaverville, US 1 0
Yang, Zhirong Arden, US 9 36

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